that is the driver of picking and choosing. mark: which banks have been the most successful? lisa: greenwich associates looked at the data, who is the top profiting firm for debt trading? they found it was jpmorgan, even if you just look at the rankings on a volume basis, they were not ranked number one. when you look at profitability, they were lower down on the scale. this shows, not all bond trading is the same. i know deutsche bank is much more heavily concentrated in government debt trading, which is less profitable, whereas jpmorgan has a bigger presence on a per capita basis. mark: we talked about the approach.